Centos提示couldn't resolve hos

使用Centos进行yum安装的时候提示以下错误：

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Courier; color: #28fe14; background-color: #000000; background-color: rgba(0, 0, 0, 0.9)}span.s1 {font-variant-ligatures: no-common-ligatures}
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os&infra=stock error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
错误：Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

解决办法：

vim /etc/resolve.cnf

添加：

nameserver 8.8.8.8 nameserver 202.106.0.20

保存，重启网络服务即可。